crack_selinux(8) SELinux Policy documentation for crack crack_selinux(8)

NAME crack_selinux - Security Enhanced Linux Policy for the crack processes

DESCRIPTION Security-Enhanced Linux secures the crack processes via flexible manda- tory access control.

The crack processes execute with the crack_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier.

For example:

ps -eZ | grep crack_t

ENTRYPOINTS The crack_t SELinux type can be entered via the "crack_exec_t" file type. The default entrypoint paths for the crack_t domain are the fol- lowing:"

/usr/sbin/crack_[a-z]*, /usr/sbin/cracklib-[a-z]*

PROCESS TYPES SELinux defines process types (domains) for each process running on the system

You can see the context of a process using the -Z option to ps

Policy governs the access confined processes have to files. SELinux crack policy is very flexible allowing users to setup their crack pro- cesses in as secure a method as possible.

The following process types are defined for crack:

crack_t

Note: semanage permissive -a crack_t

can be used to make the process type crack_t permissive. Permissive process types are not denied access by SELinux. AVC messages will still be generated.

FILE CONTEXTS SELinux requires files to have an extended attribute to define the file type.

You can see the context of a file using the -Z option to ls

Policy governs the access confined processes have to these files. SELinux crack policy is very flexible allowing users to setup their crack processes in as secure a method as possible.

The following file types are defined for crack:

crack_db_t

- Set files with the crack_db_t type, if you want to treat the files as crack database content.

crack_exec_t

- Set files with the crack_exec_t type, if you want to transition an executable to the crack_t domain.

crack_tmp_t

- Set files with the crack_tmp_t type, if you want to store crack tem- porary files in the /tmp directories.

Note: File context can be temporarily modified with the chcon command. If you want to permanently change the file context you need to use the semanage fcontext command. This will modify the SELinux labeling database. You will need to use restorecon to apply the labels.

MANAGED FILES The SELinux process type crack_t can manage files labeled with the fol- lowing file types. The paths listed are the default paths for these file types. Note the processes UID still need to have DAC permissions.

crack_db_t

/usr/lib(64)?/cracklib_dict.* /var/cache/cracklib(/.*)? /usr/share/cracklib(/.*)?

crack_tmp_t

initrc_tmp_t

mnt_t

/mnt(/[^/]*) /mnt(/[^/]*)? /rhev(/[^/]*)? /media(/[^/]*) /media(/[^/]*)? /etc/rhgb(/.*)? /media/.hal-.* /net /afs /misc /rhev

tmp_t

/tmp /usr/tmp /var/tmp /var/tmp/vi.recover

COMMANDS semanage fcontext can also be used to manipulate default file context mappings.

semanage permissive can also be used to manipulate whether or not a process type is permissive.

semanage module can also be used to enable/disable/install/remove pol- icy modules.

system-config-selinux is a GUI tool available to customize SELinux pol- icy settings.

AUTHOR This manual page was auto-generated using sepolicy manpage by mgrepl.

SEE ALSO selinux(8), crack(8), semanage(8), restorecon(8), chcon(1), sepolicy(8)

crack 13-01-04 crack_selinux(8)